Instamatic 110 cassette

In the dying days of 110 Instamatic film production, Kodak were inexplicably packaging their ISO 400 film for
the pocket instamatic cameras in cassettes that set the meter in cameras to ISO 100. With such small negatives an extra two stops exposure did the resulting images no good at all. Here is a diagram of the film speed setting notch details that you can use as a guide to trimming the cassette so as to set the camera meter correctly to ISO 400.The notch should be at 6.5mm (around 1/4 inch) but some extra clearance here will not hurt.